Knife



FIG. 1 is a front view in elevation of the ornamental design of a knife,the rear view being identical thereto;

FIG. 2 is a view in elevation of the left side of the knife shown inFIG. 1, the right side view being identical thereto;

FIG. 3 is a top plan view of the knife shown in FIG. 1;

FIG. 4 is a bottom plan view of the knife shown in FIG. 1;

and,

FIG. 5 is an isometric view of the knife shown in FIG. 1.

The ornamental design for a knife, as shown and described.